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Vishay General Semiconductor - Diodes Division SMBJ75HE3/5B
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- Part No.:
- SMBJ75HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75HE3/5B.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,961
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Product details
Overview
SMBJ75HE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ75HE3/5B datasheet, SMBJ75HE3/5B pinout, SMBJ75HE3/5B application, or SMBJ75HE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream circuitry. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the cathode-band polarity marking enables correct orientation during PCB assembly.
The SMBJ75HE3/5B is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports 5.0 W steady-state power dissipation at 50 °C ambient, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) when mounted per recommended pad layout - critical for thermal management in compact power rail protection designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range on protected line |
| VBR min/max | 83.3 V / 92.1 V at IT = 1 mA - guaranteed avalanche onset window; ensures predictable turn-on under ESD or surge stress |
| VC @ IPPM | 121 V at 5.0 A - clamped voltage during 600 W transient; determines maximum stress imposed on protected IC or MOSFET |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges |
| IDRM | 1.0 µA max at VWM - ultra-low reverse leakage; avoids parasitic loading on high-impedance sensor or reference circuits |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in under-hood automotive or industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with J-STD-020 MSL level 1 reflow |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during transient events |
| Cathode | High-side connection point | Connected to protected line (e.g., 75 V rail); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, body electronics, and ADAS power rails |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) without degradation |
| Fast response time | <1 ns turn-on latency - limits voltage overshoot before clamping engages, protecting nanosecond-scale logic inputs |
| Low profile SMB package | Height ≤ 2.20 mm - enables use in space-constrained applications such as portable medical devices and IoT edge nodes |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free molding compound for stringent environmental compliance |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate drivers and MCU I/O lines against inductive kickback from 24 V solenoid switching in PLC output modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and ground, clamping transients exceeding 75 V within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V microcontrollers and isolated gate drivers exposed to >100 V spikes. | Use Scenario: Input rail protection for body control module (BCM) power supply feeding LIN transceivers and LED drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V battery input line, absorbing load-dump and jump-start transients per ISO 7637-2 Pulse 5a. Use Value: Maintains system uptime by limiting clamped voltage to 121 V - below breakdown threshold of downstream 100 V-rated DC-DC converters. |
| Telecom Power Interfaces | Consumer Sensor Modules |
Use Scenario: Surge protection on PoE-powered Ethernet switch port DC input (48 V nominal) subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side 48 V bus, coordinated with upstream MOVs and current-limiting fuses. Use Value: Enables compliance with IEC 61000-4-5 Ed. 3, Level 3 (2 kV/1 kA) without derating due to its 600 W rating and low VC. | Use Scenario: ESD protection for analog output lines of MEMS pressure sensors in smart home HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS on 5 V analog output, placed adjacent to connector to minimize trace inductance. Use Value: Preserves signal integrity with <1 µA reverse leakage at 75 % of VWM, avoiding offset errors in 16-bit ADC measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/5B | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, identical SMB package and pinout | Lacks automotive qualification; not suitable for under-hood or safety-critical vehicle systems | Select when cost sensitivity outweighs automotive reliability requirements and AEC-Q101 is not mandated |
| SMAJ75AHE3/A | Lower power rating (400 W vs. 600 W), SMA (DO-214AC) package, 3.5 mm width vs. SMB's 4.06 mm | Reduced surge margin; unsuitable for IEC 61000-4-5 Level 4 or ISO 7637-2 Pulse 5a | Choose only for space-constrained consumer applications where 400 W surge immunity suffices |
Compared with SMBJ75A-E3/5B and SMAJ75AHE3/A, the SMBJ75HE3/5B uniquely combines AEC-Q101 qualification, 600 W surge capability, and SMB footprint - making it the preferred choice for automotive and industrial designs requiring validated long-term reliability under repetitive transient stress.
Availability
SMBJ75HE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution, telecom power interfaces, and consumer sensor modules requiring stable component supply across extended production lifecycles.
Supply support for SMBJ75HE3/5B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, high-efficiency, and application-specific performance.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through proven clamping performance and qualification-grade reliability.
FAQ
What is the maximum clamping voltage of SMBJ75HE3/5B at its rated peak pulse current?
The SMBJ75HE3/5B has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is measured under standardized test conditions per ANSI/IEEE C62.35. The SMBJ75HE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ75HE3/5B suitable for automotive applications?
Yes, SMBJ75HE3/5B is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD validation required for automotive electronic components. Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, making SMBJ75HE3/5B appropriate for engine control units, body electronics, and ADAS power rails where reliability under thermal and electrical stress is mandatory.
What does the "HE3" suffix indicate in SMBJ75HE3/5B?
The "HE3" suffix in SMBJ75HE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this part from commercial-grade variants (e.g., "E3") and halogen-free versions (e.g., "HM3"). The "H" prefix in HE3 specifically denotes automotive qualification, while "E3" confirms lead-free, RoHS-compliant terminations meeting JESD 201 Class 2 whisker resistance requirements - all verified per Vishay's internal qualification protocol.
How does SMBJ75HE3/5B differ from bidirectional TVS diodes like SMBJ75CA?
SMBJ75HE3/5B is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, SMBJ75CA is bidirectional and provides symmetrical clamping for AC signals or floating lines. SMBJ75HE3/5B offers lower leakage (1.0 µA max at VWM) and higher surge current capability in DC applications, whereas SMBJ75CA applies identical VBR and VC in both directions but lacks cathode marking and is unsuitable for polarized DC rail protection.
What is the thermal resistance of SMBJ75HE3/5B, and how does it affect PCB layout?
The SMBJ75HE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking; exceeding 5.0 W steady-state dissipation requires thermal relief design. For reliable operation at full 600 W surge ratings, PCB layout must follow Vishay's specified pad dimensions and avoid excessive trace length between the SMBJ75HE3/5B and ground plane.
SMBJ75HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ75HE3/5B FAQ
1.How can I place an order for SMBJ75HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75HE3/5B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ75HE3/5B reliable?
The price and inventory of SMBJ75HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ75HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75HE3/5B?
SMBJ75HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75HE3/5B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ75HE3/5B?
For technical support, including SMBJ75HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75HE3/5B requirements.
6.How does Aetrix verify that SMBJ75HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ75HE3/5B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ75HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ75HE3/5B?
All SMBJ75HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75HE3/5B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ75HE3/5B part is unused and in its original packaging.
Return procedure for SMBJ75HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75HE3/5B Tags
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